Edward m



(No Model.)

B. M. WARING. DYNAMO ELECTRIC MACHINE 0R MOTOR.

No. 457,754. Patented Aug. 11, 1891.

HVI/ENTUI? UNITED STATES PATENT OFFICE.

EDIVARD M. AKING, OF BROOKLYN, ASSIGNOR TO HIMSELF, AND JAMES G. \VHITE AND JOSEPH F. PORTER, OF NE\V YORK, N. Y.

DYNAMO-ELECTRIC MACHINE OR MOTOR.

SPECIFICATION forming part of Letters Patent No. 457,754, dated August 11, 1891.

' Application filed March 23, 1891. Serial No. 386,157. (No model.)

To all whom it may concern: plane or that they may be made in three or Be it known that I, EDWARD M. \VARING, more parts. My invention comprehends sima citizen of the United States, residing in ply this particular arrangement of the coils Brooklyn, in the county of Kings and State and pole-pieces without regard to the manner 55 5 of New York, have invented certain new and of constructing them. The magnet-cores on useful Improvements in Dynamo-Electric each side are joined together at the center, Machines and Motors, of which the following thus forming a star or cross, and the two comis a specification. bined forming a kind of cage.

My invention relates to dynamo-electric Orepresents the armature, which,with this 60 machines and motors, the object being to form of field-magnet, should be a Gramme provide such a machine which shall be cheap ring of large diameter. 0 represents the of manufacture, very compact in construccommutator located upon the shaft O and tion, and especially adapted as a motor for the latter has its bearings in the center of railway-vehicles. the star-shaped portions of the casting. The 65 r 5 In general terms, the invention consists of star-shaped portions of the field-magnet and two field-magnet systems arranged one upon the coils therefore stand in planes at right each side of the armature concentric with angles to the armature-shaft. the armature-shaft or axis of rotation, the In some types of railway-motors it is desirpole-pieces of each system being connected able to use a Gramme-ring armature of the 70 together to form consequent poles, the whole largest possible diameter, and when the armastructure forming a cage inclosing and proture is very large it become necessaryto contecting the armature and commutator. tract the other parts of the machine in order In the accompanying drawings, Figure. l thatit will not occupy too much space on the represents an end elevation of my machine; vehicle. If the field-magnet coils were placed 75 Fig. 2, a side elevation thereof, and Fig. 3 a upon those parts of the magnetic circuit or side elevation when the machine is turned pole-pieces which stand parallel to the armaforty-five degrees from the position shown in ture-shaft, the machine would be unduly Fig. 2. lengthened and would occupy too much space; Referring to the drawings by letter, A A but by placing the coils at right angles to the 80 0 represent two castings, constituting the cores, armature-shaft I can bring them very close yokes, and pole-pieces of the field-magnet systo the ends of the armature, and the length of tem of the machine. These castings conthe machine will only be added to by the disist each of star-shaped portions occupying ameter ot' the coils, instead of their length. parallel planes and centered with respect to This is the peculiar advantage which my ma- 8 5 each other. Each arm of the castings constichine has. Another advantage is that I do tutes a core of the field-magnet, upon which away with all brackets or other similar supis placed a coil 0.. The arms or cores of the ports for the shaft-bearings. The bearings castings are placed, respectively, in the same are brought close together and are located in radial planes, so that when their polar extere the most rigid and heavy portion of the ma- 9o 40 sions a are extended inward at right angles chine.

they will meet, as shown, thus forming a kind My invention, obviously, is not confined to of cage. At the points where the pole-pieces a four-pole machine. I may use any desired meet they are enlarged and provided with cynumber of poles and secure the same advanlindrical faces, forming the working poletages. 95 pieces I) b, 850., of the machine. 'As shown As shown is the drawings, the commutator in the drawings, the castings are divided on is located on the shaft between the armature a plane midway of the pole-pieces. I prefer and one of the star-shaped castings, but, obthis construction. Adivision in the magnetic viously, it may be inside of the armature, or circuit at this point is less harmful than at at leasta portion of it inside. In either case I00 any other point, but it is obvious that the the field-circuit will be more evenly balanced castings may be connected on any desired and the machine more compact. The commutator and armature, being located inside of the cage, are protected from injury and are in close relation for electrical connection.

I am aware that this general type of m aehi no is not new, but so far as known tome the running' parts have not all been located inside of the cage.

Having thus described my claim In a dynamo-electrie machine or motor, a field-magnet consisting of two star-shaped formations carrying field-coils on their arms or branches standing in parallel planes, the arms or branches of the two formations being arranged in pairs in the same radial invention, I 

